Nexo NXAMP - Manuel (Page 17)

ENGLISH
PAGE
17
BLOCK DIAGRAM DESCRIPTION
User set-up delay
Following user delay adjustment is possible:
GLOBAL: Affecting all channels at the same time (delaying all the system for application as delay
towers…)
MAIN: Affecting only the channels driving the MAIN system (differ in case of TWO cabinet or 3WAY
cabinet)
SUB: Affecting only the channels driving the SUB system.
GLOBAL and MAIN/SUB delays are cumulative up to 150m per channel (about 450ms, 500 feet).
Audio Input/Output
See also the wiring recommendations in the “setting up advices” section, at the beginning of this manual.
Floating balanced audio input
A new ruggedized, truly floating, high-end performance Input stage has been developed for the NX242.
In the max HEADROOM position, it is accepting input level up to 28dBu and keeping this performance
when driven by unbalanced impedance sources or when submitted to high common mode level.
The analogue inputs are on 3 pin female XLR connectors with positive and negative signal polarities on
pins 2 and 3 respectively. Pin 1 is directly coupled to the chassis.
The input signal can be adjusted in MENU 1.1 HEADROOM in order to avoid clipping of the A/D
converter. See corresponding paragraph (MENU section page 19)
Balanced audio output
The analogue outputs are on 3-pin male XLR connectors with positive and negative signal polarities on
pins 2 and 3 respectively. Pin 1 is directly coupled to the chassis. The output will deliver a full-scale output
of +28dBu(balanced 600
/ 1nF load.)
During A/C power up of the NX242, all outputs are muted by firmware-controlled relays (strapping pin 2
and pin 3 of each output).
USER MANUAL LOAD2_22
DATE: 03/12/2004